122758949 has 2 divisors, whose sum is σ = 122758950. Its totient is φ = 122758948.

The previous prime is 122758907. The next prime is 122758991. The reversal of 122758949 is 949857221.

It is a balanced prime because it is at equal distance from previous prime (122758907) and next prime (122758991).

It can be written as a sum of positive squares in only one way, i.e., 104182849 + 18576100 = 10207^2 + 4310^2 .

It is a cyclic number.

It is not a de Polignac number, because 122758949 - 2⁸ = 122758693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122758049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61379474 + 61379475.

It is an arithmetic number, because the mean of its divisors is an integer number (61379475).

Almost surely, 2^122758949 is an apocalyptic number.

It is an amenable number.

122758949 is a deficient number, since it is larger than the sum of its proper divisors (1).

122758949 is an equidigital number, since it uses as much as digits as its factorization.

122758949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 122758949 is about 11079.6637584360. The cubic root of 122758949 is about 496.9938948843.

The spelling of 122758949 in words is "one hundred twenty-two million, seven hundred fifty-eight thousand, nine hundred forty-nine".